File:Stromatolites.jpg

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Stromatolites.jpg ‎(550 × 371 pixels, dimension del file: 103 KB, typo MIME: image/jpeg)

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Description
English: Stromatolites, that is pre-cambrian petrified biofilm about one billion years old in the Siyeh rock formation of Glacier National Park, Montana, USA.
Original caption: Close-up of PreCambrian stromatolites in Siyeh Formation, Going to the Sun Highway. Glacier National Park
Français : Les stromatolites sont des accumulations fossiles de biofilms algo-bactériens datant de l'époque pré-cambrienne, ici pétrifiés sur un milliard d'années dans la formation rocheuse Siyeh de Glacier National Park, Montana, USA.
Español: Los estromatolitos son acumulaciones fósiles algo-bacterianas de la época precámbrica, petrificadas y con una antigüedad de más de mil millones de años, que se sitúan en la formación rocosa Mount Siyeh del Parque nacional de los Glaciares, en Montana, USA.
Data
Origine National Park Service - http://www.nature.nps.gov/geology/cfprojects/photodb/Photo_Detail.cfm?PhotoID=204
Autor P. Carrara, NPS
Permission
(Reuso de iste file)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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Stromatolites left behind by cyanobacteria, also called blue-green algae. They are the oldest known fossils of life on Earth. This one-billion-year-old fossil is from Glacier National Park, Montana, United States.

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1982

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Data/HoraMiniaturaDimensionesUsatorCommento
actual06:08, 28 januario 2005Miniatura pro le version de 06:08, 28 januario 2005550 × 371 (103 KB)Raul654

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